Multi-Layered Email Checker

Perform comprehensive validations: syntax layout, professional domain checks, active MX DNS records, and real-time SMTP mailbox handshake verification.

Email Checker Workspace

Verify Email Address

Simulate real-time SMTP handshakes and verify domain DNS records instantly

Verification Status: Unchecked
Syntax Format: Unchecked
SMTP Handshake: Unchecked
📝 Syntax & Format
  • Valid Format: Unchecked
  • Local Part: -
  • Domain Value: -
🌐 DNS Config
  • Has MX Records: Unchecked
  • Mail Servers: -
⚡ SMTP Handshake
  • Server Connect: Unchecked
  • Mailbox Exists: Unchecked
  • Response Code: -
⚠️ Infrastructure Risk
  • Role-based Prefix: Unchecked
  • Disposable Domain: Unchecked
  • Catch-All Server: Unchecked

Ensure List Quality With Multi-Layer Audits

Why deliverability experts and sales engineers verify mailing addresses before executing campaigns

Syntax & Format Check

Verify if the email address conforms to standard IETF RFC regulations and is written correctly.

Domain & MX Audit

Checks if the domain is registered and contains active MX records configured to receive incoming mail.

SMTP Mailbox Handshake

Simulates a connection handshake to verify if the mailbox exists on the server without sending any message.

How To Check Email Validity

Follow these simple steps to perform a complete lookup verification in seconds

Input Address

Enter the email address you want to audit into the verification input field.

Run Auditor

Click "Verify Email" to run multi-layered checks and wait for the SMTP response.

Analyze Checks

Review details about mailbox existence, DNS records, role-based settings, and formatting.

Confirm Delivery

Confirm deliverability category: Safe, Risky, or Undeliverable based on status alerts.

Frequently Asked Questions

Answers to common inquiries about email address validation checks

What is a SMTP handshake check?
A SMTP handshake verification simulates a connection to the target mail server. It initiates a mail transfer protocol command sequence up to the recipient validation command (RCPT TO) to confirm if the mailbox exists and accepts messages, and then gracefully disconnects without sending any mail.
How do you detect disposable emails?
We audit email domains against a frequently updated database of throwaway and temporary email provider domains (like mailinator, 10minutemail) to protect your databases from spam registration accounts.
What does Catch-All mean?
A Catch-All domain is configured to accept emails sent to any address prefix under that domain, even if the specific mailbox does not exist. While safe to send initially, catch-all addresses carry a higher risk of bounce-backs if later deactivated.